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Vulnerability record · CVE-2019-17055 · published 1 October 2019

CVE-2019-17055: Linux kernel missing authorization vulnerability

Linux · Linux Kernel

base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-b91ee4aa2a21.

3.3 CVSS 3.1 Low EPSS 0.54% · top 56.7% CWE-862 · Missing authorization
3.3CVSS 3.1 base score, v2 2.1
0.54%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
30References
17 Jun 2026Last modified by NVD

Description

base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-b91ee4aa2a21.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2020:0790 Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0edc3f703f7bcaf550774b5d43ab727bcd0fe06b PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b91ee4aa2a2199ba4d4650706c272985a5a32d80 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JNEWGIK7QA24OIUUL67QZ
https://seclists.org/bugtraq/2019/Nov/11 Mailing ListThird Party Advisory
https://usn.ubuntu.com/4184-1/ Third Party Advisory
https://usn.ubuntu.com/4185-1/ Third Party Advisory
https://usn.ubuntu.com/4185-2/ Third Party Advisory
https://usn.ubuntu.com/4186-1/ Third Party Advisory
https://usn.ubuntu.com/4186-2/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2020:0790 Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0edc3f703f7bcaf550774b5d43ab727bcd0fe06b PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b91ee4aa2a2199ba4d4650706c272985a5a32d80 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JNEWGIK7QA24OIUUL67QZ
https://seclists.org/bugtraq/2019/Nov/11 Mailing ListThird Party Advisory
https://usn.ubuntu.com/4184-1/ Third Party Advisory
https://usn.ubuntu.com/4185-1/ Third Party Advisory
https://usn.ubuntu.com/4185-2/ Third Party Advisory
https://usn.ubuntu.com/4186-1/ Third Party Advisory
https://usn.ubuntu.com/4186-2/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-17055), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.